Keyword: cyclotron
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MOPPC103 Status of the RIKEN RI Beam Factory Control System controls, EPICS, ion, network 348
 
  • M. Komiyama, N. Fukunishi, A. Uchiyama, M. Wakasugi
    RIKEN Nishina Center, Wako, Japan
  • M. Hamanaka, M. Nishimura
    SHI Accelerator Service Ltd., Tokyo, Japan
 
  RIKEN Radioactive Isotope Beam Factory (RIBF) is a heavy-ion accelerator facility producing unstable nuclei and studying their properties. After the first beam extraction from Superconducting Ring Cyclotron (SRC), the final stage accelerator of RIBF, in 2006, several kinds of updates have been performed. We will here present two projects of large-scale experimental instrumentations to be introduced in RIBF that offer new type of experiments. One is an isochronous storage ring aiming at precise mass measurements of short-lived nuclei (Rare RI ring), and the other is construction of a new beam transport line dedicated to more effective generation of seaweed mutation induced by energetic heavy ions. In order to control them, the EPICS-based RIBF control system is now under upgrading. Each device used in new experimental instrumentations is controlled by the same kind of controllers as those existing, such as Programmable Logic Controllers (PLCs). On the other hand, we have first introduced Control System Studio (CSS) for operator interface. We plan to set up the CSS not only for new projects but also for the existing RIBF control system step by step.  
poster icon Poster MOPPC103 [2.446 MB]  
 
TUCOCA05 EPICS-based Control System for a Radiation Therapy Machine EPICS, controls, database, neutron 922
 
  • J.P. Jacky
    University of Washington Medical Center, Seattle, USA
 
  The clinical neutron therapy system (CNTS) at the University of Washington Medical Center (UWMC) has been treating patients since 1984. Its new control system retains the original safety philosophy and delegation of functions among nonprogrammable hardware, PLCs, microcomputers with programs in ROM, and finally general-purpose computers. The latter are used only for data-intensive, prescription-specific functions. For these, a new EPICS-based control program replaces a locally-developed C program used since 1999. The therapy control portion uses a single soft IOC for control and a single EDM session for the operator's console. Prescriptions are retrieved from a PostgreSQL database and loaded into the IOC by a Python program; another Python program stores treatment records from the IOC back into the database. The system remains safe if the general-purpose computers or their programs crash or stop producing results. Different programs at different stages of the computation check for invalid data. Development activities including formal specifications and automated testing avoid, then check for, design and programming errors.  
slides icon Slides TUCOCA05 [0.175 MB]  
 
THPPC001 Overview of "The Scans" in the Central Control System of TRIUMF's 500 MeV Cyclotron software, controls, TRIUMF, hardware 1090
 
  • J.J. Pon, K.S. Lee, M. Mouat, P.J. Yogendran
    TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
  • B. Davison
    SFU, Burnaby, BC, Canada
 
  The Controls Group for TRIUMF's 500 MeV cyclotron developed, runs and maintains a software application known as The Scans whose purpose is to: a) log events, b) enunciate alarms and warnings, c) perform simple actions on the hardware, and d) provide software interlocks for machine protection. Since its inception more than 35 years ago, The Scans has increasingly become an essential part for the proper operation of the Cyclotron. This paper gives an overview of The Scans, its advantages and limitations, and desired improvements.  
poster icon Poster THPPC001 [4.637 MB]  
 
THPPC136 Stabilizing the Beam Current Split Ratio in TRIUMF's 500 MeV Cyclotron with High Level, Closed-Loop Feedback Software feedback, software, TRIUMF, controls 1370
 
  • J.J. Pon, K.S. Lee, M. Mouat, T. Planche, P.J. Yogendran
    TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
 
  In the pursuit of progressively more stable beam currents at TRIUMF's 500 MeV cyclotron there was a proposal to regulate the beam current split ratio for two primary beamlines with closed-loop feedback. Initial runs have shown promising results and have justified further efforts in that direction. This paper describes the software to provide the closed-loop feedback, and future developments.  
poster icon Poster THPPC136 [4.309 MB]